Wireshark · Display Filter Reference: Generic Routing Encapsulation

Field name	Description	Type	Versions
gre.3ggp2_di	Duration Indicator	Boolean	1.0.0 to 3.2.18
gre.3ggp2_fci	Flow Control Indicator	Boolean	1.0.0 to 3.2.18
gre.3ggp2_sdi	SDI/DOS	Boolean	1.0.0 to 3.2.18
gre.3gpp2_attrib	3GPP2 Attributes	Label	3.4.0 to 4.4.2
gre.3gpp2_attrib_id	Type	Unsigned integer (8 bits)	3.4.0 to 4.4.2
gre.3gpp2_attrib_length	Length	Unsigned integer (8 bits)	3.4.0 to 4.4.2
gre.3gpp2_di	Duration Indicator	Boolean	3.4.0 to 4.4.2
gre.3gpp2_fci	Flow Control Indicator	Boolean	3.4.0 to 4.4.2
gre.3gpp2_sdi	SDI/DOS	Boolean	3.4.0 to 4.4.2
gre.ack_number	Acknowledgment Number	Unsigned integer (32 bits)	1.6.0 to 4.4.2
gre.checksum	Checksum	Unsigned integer (16 bits)	1.6.0 to 4.4.2
gre.checksum.incorrect	Incorrect GRE Checksum	Label	1.12.0 to 4.4.2
gre.checksum.status	Checksum Status	Unsigned integer (8 bits)	2.4.0 to 4.4.2
gre.flags.ack	Acknowledgment	Boolean	1.6.0 to 4.4.2
gre.flags.checksum	Checksum Bit	Boolean	1.6.0 to 4.4.2
gre.flags.key	Key Bit	Boolean	1.6.0 to 4.4.2
gre.flags.recursion_control	Recursion control	Unsigned integer (16 bits)	1.6.0 to 4.4.2
gre.flags.reserved	Flags (Reserved)	Unsigned integer (16 bits)	1.6.0 to 4.4.2
gre.flags.routing	Routing Bit	Boolean	1.6.0 to 4.4.2
gre.flags.sequence_number	Sequence Number Bit	Boolean	1.6.0 to 4.4.2
gre.flags.strict_source_route	Strict Source Route Bit	Boolean	1.6.0 to 4.4.2
gre.flags.version	Version	Unsigned integer (16 bits)	1.6.0 to 4.4.2
gre.flags_and_version	Flags and Version	Unsigned integer (16 bits)	1.6.0 to 4.4.2
gre.ggp2_3ggp2_seg	Type	Unsigned integer (16 bits)	1.0.0 to 3.2.18
gre.ggp2_3gpp2_seg	Type	Unsigned integer (16 bits)	3.4.0 to 4.4.2
gre.ggp2_attrib	3GGP2 Attributes	Label	1.6.0 to 3.2.18
gre.ggp2_attrib_id	Type	Unsigned integer (8 bits)	1.0.0 to 3.2.18
gre.ggp2_attrib_length	Length	Unsigned integer (8 bits)	1.0.0 to 3.2.18
gre.ggp2_flow_disc	Flow ID	Byte sequence	1.0.0 to 4.4.2
gre.key	Key	Unsigned integer (32 bits)	1.0.0 to 4.4.2
gre.key.call_id	Call ID	Unsigned integer (16 bits)	1.6.0 to 4.4.2
gre.key.payload_length	Payload Length	Unsigned integer (16 bits)	1.6.0 to 4.4.2
gre.offset	Offset	Unsigned integer (16 bits)	1.6.0 to 4.4.2
gre.proto	Protocol Type	Unsigned integer (16 bits)	1.0.0 to 4.4.2
gre.routing	Routing	Label	1.6.0 to 4.4.2
gre.routing.address_family	Address Family	Unsigned integer (16 bits)	1.6.0 to 4.4.2
gre.routing.information	Routing Information	Byte sequence	1.6.0 to 4.4.2
gre.routing.src_length	SRE Length	Unsigned integer (8 bits)	1.6.0 to 4.4.2
gre.routing.sre_offset	SRE Offset	Unsigned integer (8 bits)	1.6.0 to 4.4.2
gre.sequence_number	Sequence Number	Unsigned integer (32 bits)	1.6.0 to 4.4.2
gre.wccp.alternative_bucket	Alternative Bucket	Unsigned integer (8 bits)	1.6.0 to 4.4.2
gre.wccp.alternative_bucket_used	Alternative bucket used	Boolean	1.6.0 to 4.4.2
gre.wccp.dynamic_service	Dynamic Service	Boolean	1.6.0 to 4.4.2
gre.wccp.primary_bucket	Primary Bucket	Unsigned integer (8 bits)	1.6.0 to 4.4.2
gre.wccp.redirect_header	Redirect Header	Label	1.6.0 to 4.4.2
gre.wccp.redirect_header_valid	WCCP Redirect header is valid	Boolean	1.12.0 to 4.4.2
gre.wccp.service_id	Service ID	Unsigned integer (8 bits)	1.6.0 to 4.4.2